"Selected for the 2004 National Film Registry of "culturally, historically and aesthetically significant" motion pictures.
Famous Civil Defense film for children in which Bert the Turtle shows what to do in case of atomic attack."

These short films were played for kids in schools throughout USA in 50s & early 60s.

Léna Thorimbert Coucou Yodel I bet you will smile for this 12 y.o. girl, or laugh in a happy way
"In Swiss folk music, it was probably developed in the Swiss Alps as a method of communication between mountain peaks, and it later became a part of the traditional music of the region."
They also used yodeling to call in their flocks of sheep/goats.Léna a appris le yodel en écoutant Mélanie Oesch. Elle est sur la scène des "Coups de Coeur" d'Alain Morisod. Une belle prestation à 12 ans!